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Finding the Fourth Proportional to 252,222.77, 378,389.51 and 74,743.67

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Solution

The fourth proportional to 252,222.77, 378,389.51 and 74,743.67 is: 112,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,222.77 : 378,389.51 = 74,743.67 : x
  2. Step 2: Convert to fraction form
    252,222.77/378,389.51 = 74,743.67/x
  3. Step 3: Cross multiply
    252,222.77x = 378,389.51 × 74,743.67
  4. Step 4: Simplify right side
    252,222.77x = 28,282,220,293.18
  5. Step 5: Solve for x
    x = 28,282,220,293.18/252,222.77
  6. Step 6: Final answer
    x = 112,131.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.